Chapter 7 addresses the following question: How can reflexivity be promoted in the collective context of investor-state dispute settlement, so as to help bridge individually held views by arbitrators that often come into competition or conflict with one another? The response that this chapter offers is that collective reflexivity can be promoted by acknowledging the presence of moral responsibility in arbitrators and by arbitrators committing to five distinct judicial virtues, namely: faith, humility, acquiescence, integrity, and candour. Judicial virtues are habits and mental dispositions, not an equation for the courtroom. They are thus meant as a framework offering guidelines and a roadmap to develop better deliberative practices. The chapter analyses the content of each virtue and assesses observable behaviour in investor-state dispute settlement under each of them.